SMA America, LLC Displays and Messages
SB50US-80US-IA-en-36 SB50US-80US-IA-en-36 65
Standard Operation
The inverter feeds into the power distribution grid in either "MPP", "Constant Voltage", or "Turbine"
mode.
"MPP" mode:
The Sunny Boy adjusts the voltage and the current from the PV array in order to receive the highest
possible PV output power.
"Constant Voltage" mode:
The array voltage is set to a fixed value. This value is set using the Sunny Boy Control or the Sunny
Data Software. The parameter name is
"V-Const":
This mode is suitable for using the inverter with fuel cells or small hydroelectric power plants.
"Turbine" mode:
This mode is suitable for using the inverter with a rectified DC generator and dynamic power
characteristic curve. The inverter can be adjusted to the form and slope of the power characteristic
curve of a specific generator. A small wind turbine system is a suitable generator for this.
Derating
The Sunny Boy can be operated with nominal power at an ambient temperature of up to +113 °F
(+45 °C). The Sunny Boy does remain operational at temperatures above +113 °F (+45 °C), but it
reduces the level of performance so as to protect the internal component parts from overheating.
Unwanted derating due to blocked fan inlets
Clean the fan inlets regularly.
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